你不可能爱所有人，但你可以对所有人友善。
You can't love everybody, but you can be kind to everybody.
Don't try to win a friend by presenting gifts。You should instead contribute your sincere love and learn how to win others 'heart through appropriate ways.
虽然身份卑微，但却能不失道义；虽然生活贫穷，但却能廉洁自守。
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
A story is a way of understanding the world.
Understanding the real lives of the poor is the first step toward designing effective policies to help them.
La poesía no es un lujo, es una necesidad.